US10547818B2 - Image projection device and planetarium apparatus using same - Google Patents

Image projection device and planetarium apparatus using same Download PDF

Info

Publication number
US10547818B2
US10547818B2 US16/085,282 US201716085282A US10547818B2 US 10547818 B2 US10547818 B2 US 10547818B2 US 201716085282 A US201716085282 A US 201716085282A US 10547818 B2 US10547818 B2 US 10547818B2
Authority
US
United States
Prior art keywords
dome
video
aggregate
projection
video projectors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US16/085,282
Other languages
English (en)
Other versions
US20190037182A1 (en
Inventor
Makoto Kasahara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goto Optical Manufacturing Co Ltd
Original Assignee
Goto Optical Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goto Optical Manufacturing Co Ltd filed Critical Goto Optical Manufacturing Co Ltd
Assigned to KABUSHIKIGAISHA GOTO KOGAKU KENKYUSHO reassignment KABUSHIKIGAISHA GOTO KOGAKU KENKYUSHO ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KASAHARA, MAKOTO
Publication of US20190037182A1 publication Critical patent/US20190037182A1/en
Application granted granted Critical
Publication of US10547818B2 publication Critical patent/US10547818B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3147—Multi-projection systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/145—Housing details, e.g. position adjustments thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
    • G03B37/04—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe with cameras or projectors providing touching or overlapping fields of view
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B27/00—Planetaria; Globes

Definitions

  • the present invention relates to an image projection device used in a planetarium, and to a planetarium apparatus using the image projection device.
  • the above-described video projector facilitates providing vision of moving images. Therefore, using this in a planetarium is very valuable in assisting planetarium rendering for various visual expressions.
  • An image projection system using the above-described video projector is referred to as a digital planetarium, and projects computer-graphics-based images in real time, thereby enabling projection of more than hundreds of thousands of small solar system bodies and an infinite number of artificial celestial bodies as well as a starry sky viewed from a point at a large distance from the solar system.
  • Patent Literature 1 Using a combination of such dynamic images and a starry sky produced by an optical planetarium projector (for example, Patent Literature 1) enables unprecedented visual expressions, such as display of various coordinate systems on the celestial sphere, display of a trajectory of a star, and the like.
  • a single or several video projector(s) is stationarily installed in the margin or around the center of the dome to be oriented in a particular direction to cover the dome projection plane.
  • the single video projector projects an image to occupy the entire dome surface.
  • images of the respective projectors are projected respectively onto corresponding regions of the dome surface, and the images are pieced together to occupy the entire dome surface.
  • reproduction of motion of a certain object is represented by moving the certain object in moving images projected within the fixed region(s), that is, by changing the images.
  • a viewing distance is defined such that a pixel of an image corresponds to an arc minute which is an angle corresponding to 1.0 visual acuity. Because of this, in order to achieve equivalent resolution on the dome screen in the digital planetarium using anti-aliasing, the resolution on the meridian of the dome is required to be of the order of 21,600 pixels to 32,400 pixels.
  • An image with such high resolution involves enormous cost for building a device for projecting the image as well as many costs for generating an image to be projected, which thus is not practical.
  • An image projection device has been created in view of the above issues. Specifically, it is an object to provide an image projection device at low cost to implement natural movement of an object in images projected onto a dome surface while maintaining its original resolution without an increase in resolution of a video projector as the projection device.
  • An aspect of the present invention provides an image projection device that projects images onto a dome-shaped screen and includes an aggregate of two or more video projectors projecting moving images.
  • the aggregate is placed within a dome to allow a range of projection from the aggregate to cover an entire sphere and the aggregate is mounted on a stand having two or more rotating shafts.
  • Another aspect of the invention also uses the image projection device in a planetarium apparatus, and provides a planetarium apparatus that projects images onto a dome-shaped screen and includes an aggregate of two or more video projectors projecting moving images.
  • the aggregate is placed within a dome to allow a range of projection from the aggregate to cover an entire sphere and the aggregate is mounted on an optical planetarium projector having two or more rotating shafts.
  • a single video projector or a plurality of video projectors has been previously used to define a dome-shaped projection plane alone, which is the dome screen, as the image projection range, but in the present invention, an image system is constructed to use at least two or more video projectors to define the entire sphere including the hemisphere without the presence of the screen, as the projection range, and the image system is mounted on the stand having two or more movable shafts. And, using an optical planetarium projector as the stand having the movable shafts enables synergistic use in the planetarium dome.
  • At least two or more video projectors are mounted on the stand having two or more movable shafts, in which the two shafts are, for example, an X shaft and a Y shaft, and, depending on a combination of rotations of these shafts, the video projector is movable to direct its projection direction in all directions.
  • FIG. 1 is a front view of an image projection device according to the present invention.
  • FIG. 2 is a front view of a planetarium apparatus according to the present invention.
  • FIG. 3 is a front view of an image projection device in the conventional art.
  • FIG. 1 is a diagram illustrating an example where two video projectors 1 A, 1 B are used for projection onto the all regions of a dome screen D.
  • Video projectors 1 A, 1 B with a fisheye lens with a 180-degree angle of view or wider allows an image to occupy the entire dome surface by a single monocular projector.
  • the video projectors 1 A, 1 B are configured to be oriented in the directions opposite to each other as an aggregate, and mounted on a stand having three rotating shafts 2 X, 2 Y, 2 Z.
  • Images for the video projectors 1 A, 1 B may be provided directly to the video projectors through wireless connectivity.
  • a computer for image generation may be placed in the stand so that an instruction may be provided externally to the computer to cause it to generate images.
  • images to be projected by the individual video projectors 1 A, 1 B are generated basically with a line-of-sight vector of an image being fixed. Because of this, for example, the video projector 1 A projects an image above the horizon, and the video projector 1 B projects an image below the horizon (an appearance of the ground and/or the like), in which an observer's line-of-sight is represented on the dome screen D by rotating each shaft of the stand 2 .
  • an image projected from the video projector 1 A, 1 B to depict movement or change of an object itself included in the image and only a change in image caused by a change in position of an observer.
  • FIG. 2 is a diagram illustrating a planetarium apparatus with two video projectors 11 A, 11 B being combined with an optical planetarium projector 12 .
  • Video projectors 11 A, 11 B with a fisheye lens with a 180-degree angle of view or wider allows an image to occupy the entire dome surface by a single monocular projector.
  • the video projectors 11 A, 11 B are configured to be oriented in the directions opposite to each other as an aggregate, and mounted on the optical planetarium projector 12 .
  • the optical planetarium projector 12 has a well-known configuration with three rotating shafts 12 X, 12 Y, 12 Z.
  • images for the video projectors 11 A, 11 B may be provided directly to the video projectors through wireless connectivity.
  • a computer for image generation may be placed in the optical planetarium projector so that an instruction may be provided externally to the computer to cause it to generate images.
  • FIG. 3 is a diagram illustrating a projection system with a combination of video projectors V and an optical planetarium projector P in the conventional art as an example comparison.
  • the images of the video projectors are greatly distorted and therefore the distortion is required to be corrected with precision.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Astronomy & Astrophysics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Instructional Devices (AREA)
  • Projection Apparatus (AREA)
US16/085,282 2016-03-22 2017-03-17 Image projection device and planetarium apparatus using same Active US10547818B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2016057674A JP6719240B2 (ja) 2016-03-22 2016-03-22 映像投映装置およびそれを用いたプラネタリウム装置
JP2016-057674 2016-03-22
PCT/JP2017/010855 WO2017164102A1 (ja) 2016-03-22 2017-03-17 映像投映装置およびそれを用いたプラネタリウム装置

Publications (2)

Publication Number Publication Date
US20190037182A1 US20190037182A1 (en) 2019-01-31
US10547818B2 true US10547818B2 (en) 2020-01-28

Family

ID=59900339

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/085,282 Active US10547818B2 (en) 2016-03-22 2017-03-17 Image projection device and planetarium apparatus using same

Country Status (3)

Country Link
US (1) US10547818B2 (ja)
JP (1) JP6719240B2 (ja)
WO (1) WO2017164102A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022186207A (ja) * 2021-06-04 2022-12-15 株式会社セガトイズ 映像表示装置

Citations (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230682A (ja) 1984-04-30 1985-11-16 ミノルタ株式会社 プラネタリウム
US5414521A (en) * 1991-09-12 1995-05-09 Ansley; David A. Dynamic distortion correction apparatus and method
JPH07181889A (ja) 1993-12-22 1995-07-21 Minolta Co Ltd プラネタリウム
JPH0844291A (ja) 1994-08-01 1996-02-16 Minolta Co Ltd ドーム投映装置とその投映器
US6141034A (en) * 1995-12-15 2000-10-31 Immersive Media Co. Immersive imaging method and apparatus
US20020196538A1 (en) * 2001-06-06 2002-12-26 Lantz Edward J. Video-based immersive theater
JP2003241303A (ja) 2002-02-18 2003-08-27 Takayuki Ohira プラネタリウム装置および広角映像投影装置
JP2005031270A (ja) 2003-07-10 2005-02-03 Goto Optical Mfg Co ドームスクリーンにおけるビデオ画像投映装置
JP2006145614A (ja) 2004-11-16 2006-06-08 Konica Minolta Planetarium Co Ltd プラネタリウム装置
US20070171383A1 (en) * 2006-01-23 2007-07-26 Brown International Corporation Portable battlewall display stand
JP2007333870A (ja) 2006-06-13 2007-12-27 Takayuki Ohira プラネタリウムの制御方法およびプラネタリウム制御システム
US20080002161A1 (en) * 2003-08-18 2008-01-03 Evans & Sutherland Computer Corporation Wide angle scanner for panoramic display
US20090147153A1 (en) * 2007-12-11 2009-06-11 Seiko Epson Corporation Signal conversion device, video projection device, and video projection system
US20100197354A1 (en) * 2009-01-30 2010-08-05 Lee Joo-Ho Portable terminal having projecting function
US20100220296A1 (en) * 2009-01-30 2010-09-02 Depoar Declan G Projection system
US20110214359A1 (en) * 2006-02-23 2011-09-08 Falcon's Treehouse, L.L.C. Circular motion theater
US20110234920A1 (en) * 2010-03-24 2011-09-29 Steve Nelson Method for Creating Blending Ramps for Complex Projector Image Overlaps
US20120194562A1 (en) * 2011-02-02 2012-08-02 Victor Ivashin Method For Spatial Smoothing In A Shader Pipeline For A Multi-Projector Display
US20120287407A1 (en) * 2009-01-30 2012-11-15 De Paor Declan G Projection system
US20130169888A1 (en) * 2011-12-22 2013-07-04 Canon Kabushiki Kaisha Method and device for controlling a video projector in a video projection system comprising multiple video projectors
US20140078399A1 (en) * 2012-09-17 2014-03-20 Canon Kabushiki Kaisha Video projector and associated data transmission
US20140313423A1 (en) * 2013-03-15 2014-10-23 Scalable Display Technologies, Inc. System and method for calibrating a display system using a short throw camera
US20140368614A1 (en) * 2013-06-13 2014-12-18 Edge Toy, Inc. Three dimensional scanning apparatuses and methods for adjusting three dimensional scanning apparatuses
US20150054963A1 (en) * 2013-05-01 2015-02-26 Lumo Play, Inc. Interactive projection effect and entertainment system
US20150065260A1 (en) * 2013-08-30 2015-03-05 Attraktion! GmbH Entertainment ride
US20150109648A1 (en) * 2013-10-22 2015-04-23 JVC Kenwood Corporation Image display apparatus and non-planar screen
US20160073070A1 (en) * 2014-09-09 2016-03-10 Robert M. Spearman Projection system with image blending lenses
US20180139420A1 (en) * 2015-08-11 2018-05-17 Rich Yard Investment Group Co., Ltd. Screen projection system, method and apparatus
US20180324396A1 (en) * 2016-01-13 2018-11-08 Masaaki Ishikawa Projection system, image processing apparatus, projection method
US20180364462A1 (en) * 2017-06-15 2018-12-20 Esterline Belgium Bvba Aspherical dome display and method of rear projection

Patent Citations (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230682A (ja) 1984-04-30 1985-11-16 ミノルタ株式会社 プラネタリウム
US5414521A (en) * 1991-09-12 1995-05-09 Ansley; David A. Dynamic distortion correction apparatus and method
JPH07181889A (ja) 1993-12-22 1995-07-21 Minolta Co Ltd プラネタリウム
JPH0844291A (ja) 1994-08-01 1996-02-16 Minolta Co Ltd ドーム投映装置とその投映器
US6141034A (en) * 1995-12-15 2000-10-31 Immersive Media Co. Immersive imaging method and apparatus
US20020196538A1 (en) * 2001-06-06 2002-12-26 Lantz Edward J. Video-based immersive theater
JP2003241303A (ja) 2002-02-18 2003-08-27 Takayuki Ohira プラネタリウム装置および広角映像投影装置
JP2005031270A (ja) 2003-07-10 2005-02-03 Goto Optical Mfg Co ドームスクリーンにおけるビデオ画像投映装置
US20080002161A1 (en) * 2003-08-18 2008-01-03 Evans & Sutherland Computer Corporation Wide angle scanner for panoramic display
JP2006145614A (ja) 2004-11-16 2006-06-08 Konica Minolta Planetarium Co Ltd プラネタリウム装置
US20070171383A1 (en) * 2006-01-23 2007-07-26 Brown International Corporation Portable battlewall display stand
US20110214359A1 (en) * 2006-02-23 2011-09-08 Falcon's Treehouse, L.L.C. Circular motion theater
JP2007333870A (ja) 2006-06-13 2007-12-27 Takayuki Ohira プラネタリウムの制御方法およびプラネタリウム制御システム
US20090147153A1 (en) * 2007-12-11 2009-06-11 Seiko Epson Corporation Signal conversion device, video projection device, and video projection system
US20100220296A1 (en) * 2009-01-30 2010-09-02 Depoar Declan G Projection system
US20100197354A1 (en) * 2009-01-30 2010-08-05 Lee Joo-Ho Portable terminal having projecting function
US20120287407A1 (en) * 2009-01-30 2012-11-15 De Paor Declan G Projection system
US20110234920A1 (en) * 2010-03-24 2011-09-29 Steve Nelson Method for Creating Blending Ramps for Complex Projector Image Overlaps
US20120194562A1 (en) * 2011-02-02 2012-08-02 Victor Ivashin Method For Spatial Smoothing In A Shader Pipeline For A Multi-Projector Display
US20130169888A1 (en) * 2011-12-22 2013-07-04 Canon Kabushiki Kaisha Method and device for controlling a video projector in a video projection system comprising multiple video projectors
US20140078399A1 (en) * 2012-09-17 2014-03-20 Canon Kabushiki Kaisha Video projector and associated data transmission
US20140313423A1 (en) * 2013-03-15 2014-10-23 Scalable Display Technologies, Inc. System and method for calibrating a display system using a short throw camera
US20150054963A1 (en) * 2013-05-01 2015-02-26 Lumo Play, Inc. Interactive projection effect and entertainment system
US20140368614A1 (en) * 2013-06-13 2014-12-18 Edge Toy, Inc. Three dimensional scanning apparatuses and methods for adjusting three dimensional scanning apparatuses
US20150065260A1 (en) * 2013-08-30 2015-03-05 Attraktion! GmbH Entertainment ride
US20150109648A1 (en) * 2013-10-22 2015-04-23 JVC Kenwood Corporation Image display apparatus and non-planar screen
US20160073070A1 (en) * 2014-09-09 2016-03-10 Robert M. Spearman Projection system with image blending lenses
US20180139420A1 (en) * 2015-08-11 2018-05-17 Rich Yard Investment Group Co., Ltd. Screen projection system, method and apparatus
US20180324396A1 (en) * 2016-01-13 2018-11-08 Masaaki Ishikawa Projection system, image processing apparatus, projection method
US20180364462A1 (en) * 2017-06-15 2018-12-20 Esterline Belgium Bvba Aspherical dome display and method of rear projection

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PCT/JP2017/010855, International Search Report and Written Opinion dated May 16, 2017, 2 pages-English; 7 pages-Japanese.
PCT/JP2017/010855, International Search Report and Written Opinion dated May 16, 2017, 2 pages—English; 7 pages—Japanese.

Also Published As

Publication number Publication date
JP2017173463A (ja) 2017-09-28
JP6719240B2 (ja) 2020-07-08
WO2017164102A1 (ja) 2017-09-28
US20190037182A1 (en) 2019-01-31

Similar Documents

Publication Publication Date Title
KR101034436B1 (ko) 입체 영상 표시 장치
US8210686B2 (en) Projection system
KR102072639B1 (ko) 화상 생성 장치 및 화상 표시 제어 장치
US9470967B1 (en) Motion-based system using a constant vertical resolution toroidal display
KR20050090132A (ko) 3차원 볼록 디스플레이 표면을 구비한 디스플레이 시스템
US8646918B2 (en) Projection system
KR20040005901A (ko) 180°보다 큰 각도로 이미지를 투사하기 위한 방법 및시스템
US20070097331A1 (en) Wide angle lens assembly for projector and an optical system having such a lens and projector
US20040257435A1 (en) Method of tessellating a surface
US10547818B2 (en) Image projection device and planetarium apparatus using same
CN109862328B (zh) 一种天象厅实景实时展示方法
Bourke Using a spherical mirror for projection into immersive environments
US9110358B1 (en) Method for creating and a system for using a constant vertical resolution toroidal display
CN105629639A (zh) 一种基于超大视场角鱼眼镜头的球型显示系统
CN111128052A (zh) 一种基于旋转线阵显示像源的大视场视景系统
US20220253975A1 (en) Panoramic presentation methods and apparatuses
EP3605200A1 (en) Reflective surround display system
Horan et al. Feeling your way around a cave-like reconfigurable VR system
CN102945661A (zh) 一种数字天象厅
CN108876712B (zh) 基于双投影变换的球形封闭座舱全景显示方法
US8982049B2 (en) Interactive simulated-globe display system
CN111432196B (zh) 一种基于光线跟踪的集成成像环扇形微图像阵列生成方法
CN202976531U (zh) 一种数字天象厅
EP4358507A1 (en) Imaging apparatus, method and device
JPH05307354A (ja) 星座表示装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: KABUSHIKIGAISHA GOTO KOGAKU KENKYUSHO, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KASAHARA, MAKOTO;REEL/FRAME:046878/0586

Effective date: 20180412

FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO SMALL (ORIGINAL EVENT CODE: SMAL); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT RECEIVED

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

Year of fee payment: 4